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Question

Which of the following compounds is aromatic?

A
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B
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C
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D
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Solution

The correct option is A
(a) has 6 π e i.e. (4n+2) π e , is planar and has conjugation, so it is an aromatic compound.
(b) has 4 π e i.e. (4n) π e , is planar and has conjugation. It is anti-aromatic.
(c) has 4 π e i.e. (4n) π e , is planar and has conjugation. It is anti-aromatic.
(c) has 4 π e i.e. (4n) π e , is planar and has conjugation. It is anti-aromatic.



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